4 research outputs found
Shedding light on the taxonomic diversity of the south american miocene caimans: the status of Melanosuchus fisheri (Crocodylia, Alligatoroidea)
No full textMelanosuchus niger Spix is distributed throughout the Amazon River basin today. The extinct Melanosuchus fisheri Medina from the late Miocene of Venezuela was erected based on two almost complete, but heavily deformed skulls (the holotype MCNC 243 and the referred specimen MCZ 4336), which show morphological differences from each other. The comparison indicates that only the holotype can be referred to Melanosuchus Gray. We propose MCZ 4336 is a representative of the caimanine Globidentosuchus brachyrostris Scheyer, Aguilera, Delfino, Fortier, Carlini, Sánchez, Carrillo-Briceño, Quiroz and Sãnchez-Villagra. Although the taxonomy of M. fisheri is taken into question herein, the classification of the holotype still sustains the hypothesis that the genus is registered in South America since the late Miocene
Essays on the Indian Economy: Competitive Pressure, Productivity and Performance.
No full textIndia undertook a drastic economic reform program in 1991, with the significant objectives of removing existing inefficiencies and enhancing global competitiveness. A competitive environment is a prerequisite condition for gaining higher productivity. The main desired role of economic liberalization is to enhance the efficient utilization of inputs with relaxing constraints input use and technology choices and gains from international trade by bringing global competitive pressure to the economy. The dissertation proposes a macro productivity-efficiency analysis while taking care of the inter-linkages in the economy. This is extended to address to a few important issues of the Indian economy, viz. income distribution, poverty, wage inequality between skilled and unskilled labour, returns to education and performance of formal and informal sectors. These above-mentioned issues are captured with the help of three independent essays. The analytical tool is based on a general equilibrium-activity analysis where welfare maximization subject to input and trade constraints results in competitive equilibrium. Competitive input prices reflect factor productivity. Incorporation of input-output framework captures the inter-sectoral linkages. The social accounting matrix (SAM), which plays an important role in establishing inter-linkages in the economy by combining input-output analysis and household income distribution, provides the basic data set for our model.
JUNO Sensitivity on Proton Decay Searches
No full textThe Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid
scintillator detector designed to explore many topics in fundamental physics.
In this paper, the potential on searching for proton decay in mode with JUNO is investigated.The kaon and its decay particles feature a
clear three-fold coincidence signature that results in a high efficiency for
identification. Moreover, the excellent energy resolution of JUNO permits to
suppress the sizable background caused by other delayed signals. Based on these
advantages, the detection efficiency for the proton decay via is 36.9% with a background level of 0.2 events after 10 years of data
taking. The estimated sensitivity based on 200 kton-years exposure is years, competitive with the current best limits on the proton
lifetime in this channel.Comment: 14 pages, 12 figures, an author adde
Combined sensitivity to the neutrino mass ordering with JUNO, the IceCube Upgrade, and PINGU
No full textInternational audienceThe ordering of the neutrino mass eigenstates is one of the fundamental open questions in neutrino physics. While current-generation neutrino oscillation experiments are able to produce moderate indications on this ordering, upcoming experiments of the next generation aim to provide conclusive evidence. In this paper we study the combined performance of the two future multi-purpose neutrino oscillation experiments JUNO and the IceCube Upgrade, which employ two very distinct and complementary routes toward the neutrino mass ordering. The approach pursued by the 20 kt medium-baseline reactor neutrino experiment JUNO consists of a careful investigation of the energy spectrum of oscillated ν¯e produced by ten nuclear reactor cores. The IceCube Upgrade, on the other hand, which consists of seven additional densely instrumented strings deployed in the center of IceCube DeepCore, will observe large numbers of atmospheric neutrinos that have undergone oscillations affected by Earth matter. In a joint fit with both approaches, tension occurs between their preferred mass-squared differences Δm312=m32-m12 within the wrong mass ordering. In the case of JUNO and the IceCube Upgrade, this allows to exclude the wrong ordering at >5σ on a timescale of 3–7 years—even under circumstances that are unfavorable to the experiments’ individual sensitivities. For PINGU, a 26-string detector array designed as a potential low-energy extension to IceCube, the inverted ordering could be excluded within 1.5 years (3 years for the normal ordering) in a joint analysis
